Table 1.

Effect of acute mental fatigue on various parameters

	Before	After	P value
ATMT for total error counts	16 ± 19	20 ± 26	0.076
ATMT for total trial counts	305 ± 53	325 ± 45	0.001
VAS for fatigue	21 ± 13	47 ± 20	< 0.001
ECG variables
%LF	38 ± 16	48 ± 18	0.035
%HF	40 ± 20	33 ± 17	0.170
LF/HF	3.4 ± 7.1	3.0 ± 3.8	0.396

Data are mean ± SD.

ATMT, advanced trail making test; VAS, visual analogue scale; ECG, electrocardiography; %LF, % low-frequency power; %HF, % high-frequency power.